<template>
    <div v-show="visible" @click="closeClick" class="showPhoto">
      <img class="img" :src="url" alt="图片加载失败" />
    </div>
  </template>
   
  <script>
  export default {
    name:'ShowBigImg',
    props: {
      url: {
        type: String,
        default: "",
      },
      visible: {
        type: Boolean,
        default: false,
      },
    },
    methods: {
      closeClick() {
        //子组件可以使用 $emit 触发父组件的自定义事件
        this.$emit("closeClick");
      },
    },
  };
  </script>
  <style lang="css" scoped>
  .showPhoto {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
  }
   
  .showPhoto .img {
    display: block;
    margin: auto 0;
    /* max-width: 100%; */
    max-height: 80vh;
    text-align: center;
  }
  </style>